Chess Puzzle #bF9x6 — Advanced, Black to move, middlegame

Position

White: king g1; queen a4; rooks a1/f1; bishops e2/h8; knight g3; pawns a3/c4/f2/g2. Black: king e8; queen h4; rook h2; bishops c6/e3; pawns b7/c7/d6/f7/h7. White is ahead by 7 points of material. Black to move.

Solution (3 moves)

1. Opponent setup: Qa8+ — queen a4→a8, gives check. Now Black to move.
2. Best move: Kd7 — king e8→d7. Opponent replies Bg4+ (bishop e2→g4, gives check).
3. Best move: Qxg4 — queen h4→g4, captures bishop. Opponent replies Qd8+ (queen a8→d8, gives check).
4. Best move: Kxd8 — king d7→d8, captures queen.

Tactical themes

crushing, defensive move, long, middlegame. The key move is Kd7.

Position data

FEN: 4k2B/1pp2p1p/2bp4/8/Q1P4q/P3b1N1/4BPPr/R4RK1 w - - 0 21

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